WebSVN – HelenOS – Diff – /branches/tracing/kernel/generic/src/udebug/udebug.c


/** @addtogroup generic
 * @{
 */
 
/**
 * @file
 * @brief   Tdebug.
 */
 
#include <synch/waitq.h>
#include <console/klog.h>
#include <udebug/udebug.h>
#include <arch.h>
 
void udebug_stoppable_begin(void)
{
    int nsc;
    call_t *db_call;
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&TASK->lock);
 
    nsc = --TASK->not_stoppable_count;
    db_call = TASK->debug_begin_call;
 
    if (TASK->dt_state == UDEBUG_TS_BEGINNING) {
        klog_printf("udebug_stoppable_begin");
        klog_printf(" - nsc := %d", nsc);
    }
 
    if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) {
        TASK->dt_state = UDEBUG_TS_ACTIVE;
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
 
        IPC_SET_RETVAL(db_call->data, 0);
        klog_printf("udebug_stoppable_begin/ipc_answer");
        ipc_answer(&TASK->answerbox, db_call);     
    } else {
            spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
    }
}
 
void udebug_stoppable_end(void)
{
    ipl_t ipl;
 
restart:
    ipl = interrupts_disable();
    spinlock_lock(&TASK->lock);
 
    if ((TASK->dt_state == UDEBUG_TS_BEGINNING ||
        TASK->dt_state == UDEBUG_TS_ACTIVE) &&
        THREAD->debug_stop == true) {
        TASK->debug_begin_call = NULL;
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
 
        klog_printf("udebug_stoppable_end: waitq_sleep");
        waitq_sleep(&THREAD->go_wq);
        goto restart;
        /* must try again - have to lose stoppability atomically */
    } else {
        ++TASK->not_stoppable_count;
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
    }
}
 
void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,
    unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)
{
    call_t *call;
    ipl_t ipl;
 
    ipl = interrupts_disable();
    spinlock_lock(&TASK->lock);
 
 
    if (TASK->dt_state == UDEBUG_TS_ACTIVE) {
        klog_printf("udebug_syscall_event");
        call = TASK->debug_go_call;
        IPC_SET_RETVAL(call->data, 0);
        IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);
        IPC_SET_ARG2(call->data, id);
        IPC_SET_ARG3(call->data, rc);
        klog_printf("udebug_syscall_event/ipc_answer");
 
        THREAD->syscall_args[0] = a1;
        THREAD->syscall_args[1] = a2;
        THREAD->syscall_args[2] = a3;
        THREAD->syscall_args[3] = a4;
        THREAD->syscall_args[4] = a5;
        THREAD->syscall_args[5] = a6;
 
        /*
         * Make sure debug_stop is true when going to sleep
         * in case we get woken up by DEBUG_END. (At which
         * point it must be back to the initial true value).
         */
        THREAD->debug_stop = true;
 
        ipc_answer(&TASK->answerbox, TASK->debug_go_call);
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
 
        waitq_sleep(&THREAD->go_wq);
    } else {
        spinlock_unlock(&TASK->lock);
        interrupts_restore(ipl);
    }
}
 
/** @}
 */
 

Rev 2823	Rev 2825
1	/** @addtogroup generic	1	/** @addtogroup generic
2	* @{	2	* @{
3	*/	3	*/
4		4
5	/**	5	/**
6	* @file	6	* @file
7	* @brief Tdebug.	7	* @brief Tdebug.
8	*/	8	*/
9		9
10	#include <synch/waitq.h>	10	#include <synch/waitq.h>
11	#include <console/klog.h>	11	#include <console/klog.h>
12	#include <udebug/udebug.h>	12	#include <udebug/udebug.h>
13	#include <arch.h>	13	#include <arch.h>
14		14
15	void udebug_stoppable_begin(void)	15	void udebug_stoppable_begin(void)
16	{	16	{
17	int nsc;	17	int nsc;
18	call_t *db_call;	18	call_t *db_call;
19	ipl_t ipl;	19	ipl_t ipl;
20		20
21	ipl = interrupts_disable();	21	ipl = interrupts_disable();
22	spinlock_lock(&TASK->lock);	22	spinlock_lock(&TASK->lock);
23		23
24	nsc = --TASK->not_stoppable_count;	24	nsc = --TASK->not_stoppable_count;
25	db_call = TASK->debug_begin_call;	25	db_call = TASK->debug_begin_call;
26		26
27	if (TASK->stop_request == true) {	27	if (TASK->dt_state == UDEBUG_TS_BEGINNING) {
28	klog_printf("udebug_stoppable_begin");	28	klog_printf("udebug_stoppable_begin");
29	klog_printf(" - nsc := %d", nsc);	29	klog_printf(" - nsc := %d", nsc);
30	}	30	}
31		31
32	if (TASK->stop_request == true && nsc == 0) {	32	if (TASK->dt_state == UDEBUG_TS_BEGINNING && nsc == 0) {
33	TASK->stop_request = false;	33	TASK->dt_state = UDEBUG_TS_ACTIVE;
34	TASK->debug_begin_call = NULL;	34	TASK->debug_begin_call = NULL;
35	spinlock_unlock(&TASK->lock);	35	spinlock_unlock(&TASK->lock);
36	interrupts_restore(ipl);	36	interrupts_restore(ipl);
37		37
38	IPC_SET_RETVAL(db_call->data, 0);	38	IPC_SET_RETVAL(db_call->data, 0);
39	klog_printf("udebug_stoppable_begin/ipc_answer");	39	klog_printf("udebug_stoppable_begin/ipc_answer");
40	ipc_answer(&TASK->answerbox, db_call);	40	ipc_answer(&TASK->answerbox, db_call);
41	} else {	41	} else {
42	spinlock_unlock(&TASK->lock);	42	spinlock_unlock(&TASK->lock);
43	interrupts_restore(ipl);	43	interrupts_restore(ipl);
44	}	44	}
45	}	45	}
46		46
47	void udebug_stoppable_end(void)	47	void udebug_stoppable_end(void)
48	{	48	{
49	ipl_t ipl;	49	ipl_t ipl;
50		50
51	restart:	51	restart:
52	ipl = interrupts_disable();	52	ipl = interrupts_disable();
53	spinlock_lock(&TASK->lock);	53	spinlock_lock(&TASK->lock);
54		54
-		55	if ((TASK->dt_state == UDEBUG_TS_BEGINNING \|\|
-		56	TASK->dt_state == UDEBUG_TS_ACTIVE) &&
55	if (TASK->stop_request) {	57	THREAD->debug_stop == true) {
56	TASK->debug_begin_call = NULL;	58	TASK->debug_begin_call = NULL;
57	spinlock_unlock(&TASK->lock);	59	spinlock_unlock(&TASK->lock);
58	interrupts_restore(ipl);	60	interrupts_restore(ipl);
59		61
60	klog_printf("udebug_stoppable_end: waitq_sleep");	62	klog_printf("udebug_stoppable_end: waitq_sleep");
61	waitq_sleep(&THREAD->go_wq);	63	waitq_sleep(&THREAD->go_wq);
62	goto restart;	64	goto restart;
63	/* must try again - have to lose stoppability atomically */	65	/* must try again - have to lose stoppability atomically */
64	} else {	66	} else {
65	++TASK->not_stoppable_count;	67	++TASK->not_stoppable_count;
66	spinlock_unlock(&TASK->lock);	68	spinlock_unlock(&TASK->lock);
67	interrupts_restore(ipl);	69	interrupts_restore(ipl);
68	}	70	}
69	}	71	}
70		72
71	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,	73	void udebug_syscall_event(unative_t a1, unative_t a2, unative_t a3,
72	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)	74	unative_t a4, unative_t a5, unative_t a6, unative_t id, unative_t rc)
73	{	75	{
74	call_t *call;	76	call_t *call;
75	ipl_t ipl;	77	ipl_t ipl;
76		78
77	ipl = interrupts_disable();	79	ipl = interrupts_disable();
78	spinlock_lock(&TASK->lock);	80	spinlock_lock(&TASK->lock);
79		81
80	/* being debugged + have go */	-
81	if (TASK->being_debugged && !TASK->stop_request) {	82	if (TASK->dt_state == UDEBUG_TS_ACTIVE) {
82	klog_printf("udebug_syscall_event");	83	klog_printf("udebug_syscall_event");
83	call = TASK->debug_go_call;	84	call = TASK->debug_go_call;
84	IPC_SET_RETVAL(call->data, 0);	85	IPC_SET_RETVAL(call->data, 0);
85	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);	86	IPC_SET_ARG1(call->data, UDEBUG_EVENT_SYSCALL);
86	IPC_SET_ARG2(call->data, id);	87	IPC_SET_ARG2(call->data, id);
87	IPC_SET_ARG3(call->data, rc);	88	IPC_SET_ARG3(call->data, rc);
88	klog_printf("udebug_syscall_event/ipc_answer");	89	klog_printf("udebug_syscall_event/ipc_answer");
89		90
90	THREAD->syscall_args[0] = a1;	91	THREAD->syscall_args[0] = a1;
91	THREAD->syscall_args[1] = a2;	92	THREAD->syscall_args[1] = a2;
92	THREAD->syscall_args[2] = a3;	93	THREAD->syscall_args[2] = a3;
93	THREAD->syscall_args[3] = a4;	94	THREAD->syscall_args[3] = a4;
94	THREAD->syscall_args[4] = a5;	95	THREAD->syscall_args[4] = a5;
95	THREAD->syscall_args[5] = a6;	96	THREAD->syscall_args[5] = a6;
96		97
-		98	/*
-		99	* Make sure debug_stop is true when going to sleep
-		100	* in case we get woken up by DEBUG_END. (At which
-		101	* point it must be back to the initial true value).
-		102	*/
-		103	THREAD->debug_stop = true;
-		104
97	ipc_answer(&TASK->answerbox, TASK->debug_go_call);	105	ipc_answer(&TASK->answerbox, TASK->debug_go_call);
98	spinlock_unlock(&TASK->lock);	106	spinlock_unlock(&TASK->lock);
99	interrupts_restore(ipl);	107	interrupts_restore(ipl);
100		108
101	waitq_sleep(&THREAD->go_wq);	109	waitq_sleep(&THREAD->go_wq);
102	} else {	110	} else {
103	spinlock_unlock(&TASK->lock);	111	spinlock_unlock(&TASK->lock);
104	interrupts_restore(ipl);	112	interrupts_restore(ipl);
105	}	113	}
106	}	114	}
107		115
108	/** @}	116	/** @}
109	*/	117	*/
110		118

Subversion Repositories HelenOS

(root)/branches/tracing/kernel/generic/src/udebug/udebug.c @ 2866 – Rev 2823 → 2825